Home / 7,839.32-11,751.42-2,642.36

Finding the Fourth Proportional to 7,839.32, 11,751.42 and 2,642.36

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Solution

The fourth proportional to 7,839.32, 11,751.42 and 2,642.36 is: 3,960.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839.32 : 11,751.42 = 2,642.36 : x
  2. Step 2: Convert to fraction form
    7,839.32/11,751.42 = 2,642.36/x
  3. Step 3: Cross multiply
    7,839.32x = 11,751.42 × 2,642.36
  4. Step 4: Simplify right side
    7,839.32x = 31,051,482.15
  5. Step 5: Solve for x
    x = 31,051,482.15/7,839.32
  6. Step 6: Final answer
    x = 3,960.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.